Start a bombing chain effect in zombies vs brains to clear the world. stop the zombie invasion, collect awards for a good performance and buy upgrades. it may seem hard to explode them all at a time at first, yet it actually gets harder without the right upgrades. fortunately, it's by killing the undead and also carrying brains out with the bombs that coins are earned. invest them and the precious gems, receiving in return better effect such as increase in explosion radius. use the mouse left-click to place the bomb once ready, get points and complete the awards board.
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